Thread cutting and tapping machine



E. JONES. THREAD CUTTING AND TAPPING MACHINE.

' APPLICATION FILED Inn. n. 1920.

1,392,170. P fi p 27, 1921.

2 SHEETS-SHEET I- .L 9 Q 6 O I O O O Q 0 o I 6 46 4 J J m 4/ I a, M

WITNESSES Ina/Mrs JONES.

THRE u AND TAPP ING MACHINE.

CATION FILED MAR. II, 1920- Patented Sept. 27, 1921.

2 SHEETS-SHEET 2- WITNESSES ATTORNEYS E151 Johns, or Luvnnnn, "MINiIEsorA.

THREAD CUTTING ANn'r'ArrrNe MACHINE.

TaaZZwhOmitMay concern:

Be it knownthat I, ELI Jones, a citizen of the United States, and a resident of Luverne, inthecounty of Rock and State of Minnesota, have invented a new and Improved Thread Cutting and Tapping Machine, of which the following is a full, clear, and exact description,

This invention relates to improvements in thread cutting and tapping machines, an object of the invention being to provide improved means for supporting and mounting :a longitudinally movable chuck and provide improved means for turning the chuck in either direction. 7 a

A further object is to provide improved means for clamping the work either in a horizontal or verticalposition.

A" further object is to .providea machine of the character stated which will be of extremely simple construction, strong and durable in use, and which most-,efliciently performs thefunctions for which it is intended.

With these and other objects in view the invention "consists in-certain novel features .of construction, and combinations and arrangements of parts, as will'be more'fully hereinafter described and pointed out in the claims.

In the accompanying drawings Figure 1 is av plan view illustrating my improved machine;

Fig.2 is 5; view in side elevation;

Fig. 3 is a view in longitudinal vertical section;

Fig. 4 is a view in section on the line 4-4 of Fig. 3; and

Fig. 5 is a view illustrating a tap which may be employed with my improved chuck.

1 represents a support and 2 a metal base secured on the support and provided with alined bearingbrackets 4 and 5 and with a bearing bracket 6 at right angles to the brackets 4 and 5 and located on a median line therebetween. The bracket 6 supports a drive shaft 7 and the brackets 4 and 5 support a driven shaft 8. A beveled pinion 9 is fixed to the drive shaft 7 and a drive pulley 10 is also fixed to the shaft 7 and driven by a belt 11 from any suitable source of power. 7

Facing beveled gears 12 and 13 are mounted loosely on the shaft 8 and a sliding clutch 14 is located on the shaft 8 between the gears other.

I Specification of ijetters'iatent. Patented Sept. 1921. Application filed March in, 1920. s mi no. 364,998:

UNITED STATES P -Eur olFF1cEl- 12 and and isadaptedto be moved by means of a lever .15 so asto lock'e ither of at 16, to a post 17 on the base 2.v The long. end of the lever 15 extends longitudinally of -the machine and rests upon a laterally projecting arm '18 carried-by bracket 5.

On the free end of the. driven shaft 8 my improved chuck 1-9 is located and is provided with a relatively long sleeve 20 keyed to slide 'onthe shaft 8,. any desired number of keyways or grooves 21 beingprovidedin the shaft 8. The chuck 19 is moved longitudinally on the shaft 8.by means of a lever 22, the latter having a slotted portion 23 pivotally connected atits s ides to trunnions 24 on a collar 25. The collar '25 is loose on the sleeve 20 of the chuck and is mounted between fixed collars'26 and 27. The lower end of the'lever 22 is provided with a lug 28 which is located in an opening 29 in-an arm 30 projecting from the bracket 5 so that the swinging movement of the lever operates to move the chuck longitudinally.

;.On the base 2 atone end angle brackets 31 and 32. are secured and located parallel to ieach other. A transversely positioned ing the respective members so that when the rod 36 is turned, the members 34 and 35 will be moved toward or away from each v A crank arm 37 provided at one end of the rod 36 facilitates its adjustment.

These members 34 and 35 have clamping jaws 38 to engage the work and support it in a horizontal position.

To support the work in a vertical position, a third vise member 39 is located in parallelism with the member 34 and at its lower end is slidable upon a bolt 40 secured to themember 34 and projecting through the member 39 and having a nut 41 thereon limiting the movement of the member 39. A coiled spring 42is positioned around the bolt 40 between the members 34. and 39 and.

said gears to the shaft 8'or to lie at an inter- I e5 rod 33 is projected through the brackets tends to press the member 39 away from the member 34. A screw threaded rod 43 is mounted in the member 34 and has screw threaded engagement with the member 39 so that when this rod 43 is turned,;it will serve to move the member 39 toward or away from the member 34. A crank arm.

- as I may use any standard die and tap in accordance with the work to be-done.

In operation, the work is clamped at the end of the base 2 by the members 34'and 35 or by the members 34 and 39 and the chuck 19 is moved toward the work by means of the lever 22. The clutch 14 is operated to lock either of the gears 12 or 13 to the driven shaft 8 in'accordance with the direction of movement desired, and the desired length of thread can be cut or the desired length of tap can be made by adjusting the work in the clamping'members and by moving the chuck. After the work is finished, the lever 15 is operated to move the clutch 14 to an intermediate position so as to permit the gears 12 and-13 to turn idly'on the shaft 8 and allow free manipulation of the dies and taps in the'chuck in accordance with the work to be done.

Various slight changes may be made-in the general form and arrangement of parts described without departing from the invention, and hence I do not limit myself to the precise details set forth but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Iclaim: 1. Armachine of the character described,

comprising. a drive shaft, a driven shaft at rightangles thereto, facing beveled gears loose on the driven shaft, a pinion fixed to mally spaced from both of said gears, a

chuck keyed to slide on the driven shaft, a support, and a chuck moving 1 lever fulcrumedat one end in said support and 0peratively connected at a point removed from its fulcrum with said chuck.

2. A machine of the character-described,

comprising a drive shaft, a pinion on the drive shaft, a driven shaft, gears loose on the driven shaft and meshing with the pinion, a clutch on the driven shaft norinto locked engagement with either of the gears, a chuck keyed to slide on the driven comprising a support, a horizontal shaft on -mally 'spacedfrom the gears and movable and means operatively the "support, means for turning the shaft ineither direction, a chuck on the shaft, a pair of brackets on the shaft, atransversely position'edrod connecting the brackets, 21 pair of transversely movable vise members mounted on the rod,'a second rod having right andleft hand screw threads engaging the respective vise members, athird vise member movable longitudinally 'ofthe supportpa spring exerting pressure on the lastmentioned vise member tending to move it in onedirectiom'and a screw "engaging the last-mentioned vise member adapted to move it in the opposite direction.

, I Y ELI JONES. 

